/*
 * Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * WSO2 Inc. licenses this file to you under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except
 * in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package io.siddhi.core.util.config;

import java.util.Map;

/**
 * Siddhi Configuration Reader
 */
public interface ConfigReader {

    /**
     * Returns the value of the system property if set else the default value is returned
     *
     * @param name         Name of the property
     * @param defaultValue Default value for the property
     * @return Value of the system property
     */
    String readConfig(String name, String defaultValue);

    /**
     * Return all the configurations in the config reader
     *
     * @return Hashmap of properties and values
     */
    Map<String, String> getAllConfigs();

}
